"I prayed with the Messenger of Allah (ﷺ) and I used to see the whiteness of his armpits when he prostrated."
Sunan an-Nasa'i Book 12, Hadith 80
← Previous Hadith "If I were in front of the Messenger of Allah (ﷺ) I would be able to see the whiteness of his armpits." (One of the narrators) Abu Mijlaz said: "It is as if he said that because he was praying."

Sunan an-Nasa'i Book 12, Hadith 79 Next Hadith → When the Prophet (ﷺ) prostrated he would hold his arms out from his sides so that if a lamb wanted to pass beneath his arms it would be able to do so.

Sunan an-Nasa'i Book 12, Hadith 81